COMPARISON OF STORAGE OF COARSE WOODY DEBRIS BETWEEN HUZHONG FOREST BUREAU AND HUZHONG NATURAL RESERVE IN DA HINGGAN MOUNTAINS, CHINA

doi:10.3773/j.issn.1005-264x.2009.06.007

Abstract

Abstract:

Aims Coarse woody debris (CWD) plays an important role in maintaining biodiversity, providing critical habitat for organisms and cycling of carbon and nitrogen in forest systems. Our objective was to understand the effects of anthropogenic disturbance on CWD in Da Hinggan Mountains as the key to forest health and sustainable forest management.
Methods We compared CWD storage using a line-intercept method in Huzhong Forest Bureau, which represented forest affected by anthropogenic disturbance, with Huzhong Natural Reserve, which represented primary forest unaffected by anthropogenic disturbance, of Da Hinggan Mountains.
Important findings Storage of CWD varied between 5.92-43.53 m³·hm^-2 in Huzhong Natural Reserve and 12.70-47.59 m³·hm^-2 in Huzhong Forest Bureau. Anthropogenic disturbance had greater effects on mixed and coniferous forest than broadleaf forest. More CWD occurred in mixed forest and less CWD in coniferous forest, and the proportion of the advanced decay class CWD increased and snags decreased with anthropogenic disturbance. The storage of CWD in managed forest (8.20-25.60 m³·hm^-2) is less than that in virgin forest (18.70-36.99 m³·hm^-2). Residue from harvesting should be maintained to retain the natural forest characteristics of CWD.

Key words: line-intersect method, coarse woody debris (CWD), anthropogenic disturbance, Da Hinggan Mountains

LIU Zhi-Hua, CHANG Yu, HU Yuan-Man, LI Yue-Hui, WANG Jin-Hai, JING Guo-Zhi, ZHANG Hong-Xin, ZHANG Chang-Meng. COMPARISON OF STORAGE OF COARSE WOODY DEBRIS BETWEEN HUZHONG FOREST BUREAU AND HUZHONG NATURAL RESERVE IN DA HINGGAN MOUNTAINS, CHINA[J]. Chin J Plant Ecol, 2009, 33(6): 1075-1083.

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Figures/Tables 6

References 40

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特征 Character	分解等级 Decay class
特征 Character	轻度分解 Early decay	中度分解 Intermediate decay		高度分解 Advanced decay
	I	II	III	IV	V
枝叶 Branches, twigs and leaves	枝叶全存在 Present	<5 cm的小枝脱落 Twigs less than 5 cm stubs	<10 cm的大枝脱落 Twigs less than 10 cm stubs	枝节脱落 Branch stubs	不存在 Absence
树皮 Bark	完整, 坚固Intact, tight	存在 Present	大部分存在 Majority present	大部分脱落 Majority absent	无 Absent
木质结构完整性 Wood texture integrity	坚固, 原色 Solid, original color	坚固, 原色 Solid, original color	半坚实, 原色至褪色 Semi-solid Original color to faded	部分变软, 原色至褪色 Partly soft, original color to faded	变软破碎, 褪色 Fragmented, faded
植物生长状况 Vegetation condition	无 No present	无 No present	少量苔藓 Mosses cover less than 35%	少量灌木, 幼苗, 苔藓覆盖一半 Few shrubs, seedlings, mosses cover about 50%	灌木, 幼苗较多; 苔藓覆盖面积超过表面积的50% More shrubs, seedlings, Mosses cover more than 60% of surface area

特征 Character	分解等级 Decay class
特征 Character	轻度分解 Early decay	中度分解 Intermediate decay		高度分解 Advanced decay
	I	II	III	IV	V
枝叶 Branches, twigs and leaves	枝叶全存在 Present	<5 cm的小枝脱落 Twigs less than 5 cm stubs	<10 cm的大枝脱落 Twigs less than 10 cm stubs	枝节脱落 Branch stubs	不存在 Absence
树皮 Bark	完整, 坚固Intact, tight	存在 Present	大部分存在 Majority present	大部分脱落 Majority absent	无 Absent
木质结构完整性 Wood texture integrity	坚固, 原色 Solid, original color	坚固, 原色 Solid, original color	半坚实, 原色至褪色 Semi-solid Original color to faded	部分变软, 原色至褪色 Partly soft, original color to faded	变软破碎, 褪色 Fragmented, faded
植物生长状况 Vegetation condition	无 No present	无 No present	少量苔藓 Mosses cover less than 35%	少量灌木, 幼苗, 苔藓覆盖一半 Few shrubs, seedlings, mosses cover about 50%	灌木, 幼苗较多; 苔藓覆盖面积超过表面积的50% More shrubs, seedlings, Mosses cover more than 60% of surface area

	保护区 Nature reserve
	倒木 Down log 平均值(标准偏差) Mean (SD)	枯立木 Snag 平均值(标准偏差) Mean (SD)	总 Total 平均值(标准偏差) Mean (SD)	倒木 Down log 平均值(标准偏差) Mean (SD)	枯立木 Snag 平均值(标准偏差) Mean (SD)	总 Total 平均值(标准偏差) Mean (SD)
混交林 Mixed forest	2.33 (1.33)	3.58 (2.58)	5.92 (3.92)	27.72 (32.65)	2.05 (3.20)	29.77 (35.85)
阔叶林 Broadleaf forest	26.20 (3.76)	17.33 (18.58)	43.53 (22.35)	42.23 (41.61)	5.36 (10.72)	47.59 (52.33)
针叶林 Coniferous forest	29.56 (16.46)	11.03 (10.46)	40.58 (26.92)	8.99 (9.51)	3.72 (8.17)	12.70 (17.67)

	保护区 Nature reserve
	倒木 Down log 平均值(标准偏差) Mean (SD)	枯立木 Snag 平均值(标准偏差) Mean (SD)	总 Total 平均值(标准偏差) Mean (SD)	倒木 Down log 平均值(标准偏差) Mean (SD)	枯立木 Snag 平均值(标准偏差) Mean (SD)	总 Total 平均值(标准偏差) Mean (SD)
混交林 Mixed forest	2.33 (1.33)	3.58 (2.58)	5.92 (3.92)	27.72 (32.65)	2.05 (3.20)	29.77 (35.85)
阔叶林 Broadleaf forest	26.20 (3.76)	17.33 (18.58)	43.53 (22.35)	42.23 (41.61)	5.36 (10.72)	47.59 (52.33)
针叶林 Coniferous forest	29.56 (16.46)	11.03 (10.46)	40.58 (26.92)	8.99 (9.51)	3.72 (8.17)	12.70 (17.67)